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An Unhandled Exception occurred. A previous action may not have completed successfully.
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Created/Edited - 7/16/2026 by Michael Cordeiro | Alteryx

Description

the error of, "An Unhandled Exception occurred. A previous action my not have completed successfully," displays when attempting to open Alteryx Designer:

image.png

Issue

"An Unhandled Exception occurred. A previous action may not have completed successfully," displays when attempting to open Alteryx Designer. Designer does not open and the application and error messaging closes.

Environment

Designer 2022.1

Cause

Updating DCM settings may have resulted in the experience where the error messaging is displayed and Designer fails to open.

Resolution

 

  1. close Alteryx and error messaging if still open
  2. Navigate to C:\Users\<username>\AppData\Local\Alteryx
  3. delete the following files 
    1. Dcm.22.sqlite
    2. dcmSecrets.4.sqlcipher
    3. image.png
  4. open Alteryx and re-establish connections by syncing with server / re-creating connections.
Additional Information
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